1. Introdução
Thank you for choosing the CUKTECH 25000mAh Power Bank, model PB250. This portable power bank is designed to provide high-capacity, fast charging for a wide range of electronic devices, including laptops, smartphones, and tablets. With its multiple output ports and advanced safety features, it offers a reliable power solution for travel, work, and daily use.

Image 1.1: The CUKTECH 25000mAh Power Bank PB250, a portable charging device with a sleek grey finish, shown alongside two USB-C charging cables.
2. Conteúdo da embalagem
Por favor, verifique se a embalagem contém os seguintes itens:
- CUKTECH 25000mAh Power Bank (PB250)
- 1 cabo de carregamento USB-A para USB-C de 3.3 metro
- 1 x 1.6ft USB-C to USB-C Charging Cable
- Manual do usuário (este documento)
3. Produto acabadoview
The CUKTECH PB250 features multiple ports for versatile charging and a digital display for real-time information.
3.1. Configuração da porta

Imagem 3.1: Uma descrição detalhada view of the CUKTECH PB250's charging ports, showing one USB-A port with a maximum output of 65W, one USB-C1 port with a maximum output of 100W, and one USB-C2 port with a maximum output of 45W.
- USB-C1 Port (IN/OUT1): Up to 100W Max input/output. Supports Power Delivery (PD) for fast charging compatible devices and recharging the power bank.
- Porta USB-A (OUT2): Up to 65W Max output. Compatible with various devices requiring USB-A charging.
- USB-C2 Port (IN2/OUT3): Up to 45W Max input/output. Supports Power Delivery (PD) for charging devices and recharging the power bank.
3.2. Display digital
O visor digital integrado mostra a porcentagem restante da bateria.tage do carregador portátil, permitindo que você monitore seu nível de carga rapidamente.
4. Configuração
4.1. Carregamento inicial
Before first use, it is recommended to fully charge your CUKTECH PB250 Power Bank. Use a compatible USB-C power adapter (not included) and the provided USB-C to USB-C cable to connect the power bank's USB-C1 or USB-C2 port to a power source. The digital display will show the charging progress.

Image 4.1: The CUKTECH PB250 Power Bank connected to a power source via its USB-C port, illustrating its capability for 100W maximum recharging, reaching 60% in 1 hour and 100% in 2.5 hours.
A full charge typically takes approximately 2.5 hours when using a 100W Power Delivery charger.
5. Operação
5.1. Carregando seus dispositivos
Connect your device to the appropriate port on the power bank using a compatible charging cable. The power bank will automatically detect the device and begin charging.
- For USB-C Devices: Use the USB-C to USB-C cable to connect to either USB-C1 (up to 100W) or USB-C2 (up to 45W) ports.
- For USB-A Devices: Use the USB-A to compatible cable to connect to the USB-A port (up to 65W).

Image 5.1: The CUKTECH PB250 Power Bank connected to a MacBook Pro via a USB-C cable, demonstrating its ability to provide power comparable to a 100W MacBook Pro charger, charging the laptop to 70% in 1 hour.
5.2. Multi-Port Charging
The power bank supports simultaneous charging of up to three devices. The total output power will be dynamically distributed among the connected devices.

Image 5.2: The CUKTECH PB250 Power Bank simultaneously charging a MacBook Pro 16, a tablet, and a smartphone, illustrating its triple-port fast charging capability. A table shows charging capacities for various devices.
When multiple ports are in use, the power distribution may vary. Refer to the diagrams below for typical power distribution scenarios:
Carregamento de porta única

Image 5.3: Diagram illustrating the maximum power output when only one port is in use: USB-C1 at 100W Max, USB-A at 65W Max, and USB-C2 at 45W Max.
Carregamento de duas portas

Image 5.4: Diagram detailing power distribution when two ports are used simultaneously: USB-C1 (100W Max) + USB-A (65W Max), USB-C1 (100W Max) + USB-C2 (45W Max), and USB-A (65W Max) + USB-C2 (45W Max).
Carregamento de três portas
When all three ports are in use, the power bank will intelligently distribute power. The USB-A port will typically output 18W Max, while USB-C1 and USB-C2 will share the remaining power, with USB-C1 prioritizing higher output.
6. Manutenção
- Limpeza: Use a soft, dry cloth to clean the power bank. Avoid using harsh chemicals or abrasive materials.
- Armazenar: Store the power bank in a cool, dry place away from direct sunlight and extreme temperatures. If storing for extended periods, charge the power bank to approximately 50-70% every three months to maintain battery health.
- Evite quedas: Do not drop or subject the power bank to strong impacts.
7. Solução De Problemas
- Banco de potência não carrega: Ensure the charging cable is securely connected to both the power bank and the power adapter. Verify that the power adapter is functioning correctly and provides sufficient power (e.g., a 100W PD charger for optimal speed).
- Dispositivo não carrega: Check if the power bank has sufficient charge. Ensure the charging cable is compatible with your device and securely connected. Try a different port or cable.
- Carregamento lento: Ensure you are using a fast-charging compatible cable and adapter. Some devices may limit charging speed based on their battery level or temperature. When multiple devices are connected, the total output is shared, which may reduce individual port speeds.
- Display digital não funciona: Press the power button briefly to activate the display. If it remains unresponsive, the power bank may require recharging or service.
8. Especificações
| Recurso | Detalhe |
|---|---|
| Número do modelo | PB250 |
| Capacidade da bateria | 25000mAh (90Wh) |
| Entrada/Saída USB-C1 | 100W Máx. (PD) |
| Entrada/Saída USB-C2 | 45W Máx. (PD) |
| Saída USB-A | 65W Max |
| Produção total | 165W Max (shared) |
| Dimensões | 7.4 x 3.2 x 1.1 polegadas (18.8 x 8.1 x 2.8 cm) |
| Peso | 1.28 libras (580g) |
| Tipo de Bateria | Íon de lítio |
| Características especiais | Digital Display, Multiple Overheat Protections |
9. Informações de segurança
- Não exponha o carregador portátil a temperaturas extremas, luz solar direta ou fogo.
- Não desmonte, perfure ou modifique o carregador portátil.
- Mantenha fora do alcance de crianças.
- Evite o contato com água ou outros líquidos.
- If the power bank swells, emits odor, or becomes excessively hot, discontinue use immediately.
9.1. Proteção contra superaquecimento
The CUKTECH PB250 is equipped with five NTC sensors to provide comprehensive overheat protection for the battery cells and circuit board, ensuring safe operation.

Imagem 9.1: Um interno view diagram of the CUKTECH PB250, highlighting the placement of five NTC sensors designed to provide comprehensive overheat protection for the internal components.
9.2. Air Travel Regulations
The CUKTECH PB250 has a battery capacity of 25000mAh (90Wh), which conforms to international aviation standards for carry-on luggage (typically under 100Wh). Always check with your airline for their specific regulations before traveling.

Image 9.2: A person holding the CUKTECH PB250 Power Bank in an airport, indicating its compliance with flight regulations due to its battery power being less than 100Wh.
10. Garantia e Suporte
10.1. Informações de garantia
CUKTECH products typically come with a 24-month warranty against manufacturing defects. Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
10.2. Suporte ao cliente
For any questions, technical support, or warranty inquiries, please contact CUKTECH customer service:
- E-mail: service@cuktech.com
- Suporte on-line: Visit the official CUKTECH webSite com perguntas frequentes e recursos de suporte adicionais.





